A RELATIONSHIP BETWEEN SIZE OF TREES AND THEIR NUMBER

It is known that stem diameter at crown base, D(c), has a closer relat ionship with crown size than diameter at breast height, D. Because num ber of trees per unit area, N, depends on crown size, it is likely tha t average D(c) will be a better predictor of tree number than D. It is shown that if the relationship between the logarithms of N and D(c) i s linear, then a similar relationship between N and D is not. A new si ze-number relationship is proposed that attempts to reconstruct D(c) u sing readily available variables, D and total tree height.